Address signboard



FIG. 1 is a front perspective view of an address signboard showing the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Any broken line illustration of environmental structure in the drawings is not part of the design sought to be patented.

In the drawings, those portions of the design obscured by broken lines form no part of the claimed design. 

The ornamental design for an address signboard, as shown and described. 